Dual Monitor support

[VegasFlyBy]

Hey guys. Just wondering if anyone can help me out with setting up my second monitor.

Main screen: dell 21" LCD widescreen (max res 1680 x 1050).
second sreen: envision 17" LCD (not sure of max res.)
Video card: ATI Radeon X800 XL 256mb.

I have both hooked up and they seem to work fine in Windows. However, when I run flight sim I cant open a secondary window and move
it over to the secondary screen. Any help would be appeciated.

Thanks,
Erik